~/tools / spf-checker

SPF Checker

Check SPF record. Counts DNS lookups against the 10-lookup limit, flags `+all` security holes, and identifies common mistakes.

>
[ OK ] Strict SPF (-all). Unauthorized senders are rejected.
── output ─────
v=spf1 include:spf.tutanota.de -all
DNS lookups
1 / 10
All mechanism
-all
Includes (1)
spf.tutanota.de
IP4 (0)
—
IP6 (0)
—
// Save tuta.com → we'll run this daily and alert on changes. /signup →